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Finding the Fourth Proportional to 448,045.40, 672,053.70 and 148,539.80

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Solution

The fourth proportional to 448,045.40, 672,053.70 and 148,539.80 is: 222,804.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,045.40 : 672,053.70 = 148,539.80 : x
  2. Step 2: Convert to fraction form
    448,045.40/672,053.70 = 148,539.80/x
  3. Step 3: Cross multiply
    448,045.40x = 672,053.70 × 148,539.80
  4. Step 4: Simplify right side
    448,045.40x = 99,826,722,187.26
  5. Step 5: Solve for x
    x = 99,826,722,187.26/448,045.40
  6. Step 6: Final answer
    x = 222,804.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.